How to remove a "unknown user"-session
If I logout a user from it's session (session.logoutUser()), (session.logoutSessionUser()), the session is still existing with an "unknown user". 
		ISecurityManager secMgr = SecurityManager.getSecurityManager();
		for (ISession ssn : secMgr.getSessions()) {
			if (ssn.getSessionUserName().equalsIgnoreCase("xyz")) {
				ssn.logoutSessionUser();
			}			
		}
    
The session disappears only after a timeout (that might be the timeout defined in the tomcat configuration)
However: Is there a way to close/kill a session immediately after logging out a user?